Hi Daphne,
Thanks for getting in touch, I hope you had a nice trip.
Sadly, I cannot see how many people are active at any given time, I can perhaps get a few stats together but they wouldn't be overly reliable I don't think, many people use the forum in the run up to a trip, then not again, some use it daily to socialise, many others, join once and never use it again, it's very hard to say.
I hope this helps,
Kindest,
Ben